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I corrected the routing of Smyril Line's ferry Hirtshals-Tórshavn. OSM used to show the wrong route south of Shetland. The "new" route goes north of Shetland. Instead of rerouting the route, I deleted the old route and added a new ferry line to the map.

deleted ferry Hirtshals-Tórshavn in order to add the new correct route (rerouting was more difficult!)

Ferry Hirtshals-Seyðisfjørður doesn't exist; all trips (except maybe 1/year) sail via Tórshavn, so including Hirtshals-Seyðisfjørður separately is misleading. Therefore I removed it.

Ferry Hirtshals-Seyðisfjørður doesn't exist; all trips (except maybe 1 or 2 per year) sail via Tórshavn, so including Hirtshals-Seyðisfjørður separately is misleading. Therefore I removed the route.

I deleted the incorrect routing of Smyril Line's route Hirtshals-Tórshavn. It almost always (unless there is a storm etc.) sails north around Shetland, instead of south of Shetland, which the map showed. Meanwhile I uploaded GPS traces for the correct one